12501270665 has 8 divisors (see below), whose sum is σ = 16155488328. Its totient is φ = 9231707520.

The previous prime is 12501270653. The next prime is 12501270667. The reversal of 12501270665 is 56607210521.

It can be written as a sum of positive squares in 4 ways, for example, as 17007376 + 12484263289 = 4124^2 + 111733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12501270665 - 2³⁰ = 11427528841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12501270667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96163556 + ... + 96163685.

It is an arithmetic number, because the mean of its divisors is an integer number (2019436041).

Almost surely, 2^12501270665 is an apocalyptic number.

It is an amenable number.

12501270665 is a deficient number, since it is larger than the sum of its proper divisors (3654217663).

12501270665 is a wasteful number, since it uses less digits than its factorization.

12501270665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192327259.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 12501270665 in words is "twelve billion, five hundred one million, two hundred seventy thousand, six hundred sixty-five".